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  • 1.  Connecting Single Access Switch to two member VC for redundancy

    Posted 07-18-2024 08:55

    Dear Team,

    We have  a ex3400 access switch , that was connected to a two member QFX5120 VC as ae0 bundle

    EX3400 Ports                                                                          QFX5120

    xe-0/2/0 -------------------------------------------- xe-0/0/10

    xe-0/2/1-------------------------------------------- xe-1/0/10

    All the vlan gateways are  configured in QFX -VC.

    We face reachability/connectivity loss when the two links are used. If we remove one, we have reachability/connectivity, but redundancy is lost.

    Anything we have missed.  Any other alternate solution ?

    Thanks and regards,

    AN



  • 2.  RE: Connecting Single Access Switch to two member VC for redundancy

    Posted 07-19-2024 01:23

    show interface ae0 extensive

    show lacp interfaces

    ae0 interface configuration 

    Please check and share the items above.



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    LOW ZHE TING
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    Original Message


  • 3.  RE: Connecting Single Access Switch to two member VC for redundancy

    Posted 07-19-2024 08:53

    what is this output for the 3400 and the 5120-vc?

    show lacp int ae0



    ------------------------------
    - Aaron
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    Original Message


  • 4.  RE: Connecting Single Access Switch to two member VC for redundancy

    Posted 07-20-2024 12:52

    On the face of it, this seems likely to be a configuration error, as we use AE links on the uplinks between our 3400 access switches and our QFX core switches all the time.

    So, perhaps you could list your configurations for the ports involved, and the ae interfaces?

    Ours are usually L2 links to the access switches, but similar config for our L3 links between cores. Here is an example of both ends of one of our access links:

    EX3400 end:

    {master:0}[edit]

    steveb@216-4# show interfaces xe-0/2/0 | display set

    set interfaces xe-0/2/0 description Uplink-0

    set interfaces xe-0/2/0 ether-options 802.3ad ae0

    {master:0}[edit]

    steveb@216-4# show interfaces xe-1/2/0 | display set    

    set interfaces xe-1/2/0 description Uplink-1

    set interfaces xe-1/2/0 ether-options 802.3ad ae0

    {master:0}[edit]

    steveb@216-4# show interfaces ae0 | display set

    set interfaces ae0 description Uplink

    set interfaces ae0 aggregated-ether-options lacp passive

    set interfaces ae0 aggregated-ether-options lacp periodic fast

    set interfaces ae0 unit 0 family ethernet-switching interface-mode trunk

    set interfaces ae0 unit 0 family ethernet-switching vlan members all

    set interfaces ae0 unit 0 family ethernet-switching storm-control storm50

    And at the QFX end:

    {master:1}[edit]

    steveb@180-Tremont-Dst# show interfaces xe-0/0/3 | display set

    set interfaces xe-0/0/3 description 216-4

    set interfaces xe-0/0/3 ether-options 802.3ad ae14

    {master:1}[edit]

    steveb@180-Tremont-Dst# show interfaces xe-1/0/3 | display set    

    set interfaces xe-1/0/3 description 216-4

    set interfaces xe-1/0/3 ether-options 802.3ad ae14

    {master:1}[edit]

    steveb@180-Tremont-Dst# show interfaces ae14 | display set

    set interfaces ae14 description 216-4

    set interfaces ae14 aggregated-ether-options lacp active

    set interfaces ae14 aggregated-ether-options lacp periodic fast

    set interfaces ae14 unit 0 family ethernet-switching interface-mode trunk

    set interfaces ae14 unit 0 family ethernet-switching vlan members Staff-180-Wired

    set interfaces ae14 unit 0 family ethernet-switching vlan members Student-180-Wired-NAT

    set interfaces ae14 unit 0 family ethernet-switching vlan members UnknownDevice-180

    set interfaces ae14 unit 0 family ethernet-switching vlan members Phones-180_564

    set interfaces ae14 unit 0 family ethernet-switching vlan members AP-180-A8

    set interfaces ae14 unit 0 family ethernet-switching vlan members Switch-216



    ------------------------------
    Steve Bohrer
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    Original Message


  • 5.  RE: Connecting Single Access Switch to two member VC for redundancy

    Posted 07-28-2024 19:48

    Dear Team,

    As Mr Steve pointed out , it is a configuration error.

    We corrected and gets resolved.

    Thanks for the guidelines.

    Thanks and regards,

    A.Narayanan


    Original Message